Mindray WATO EX-55Pro, Service Manual

Page: 130 / 474

4-30
4.12.2 Test the O
2
Concentration Monitoring and Alarms
NOTE

This test is not required if O
2
sensor is not configured.
1. Set the Bag/vent switch to the position.
2. Remove the O
2
sensor and make sure that the sensor measures approximately 21% O
2
in
room air.
3. Select [
Alarm
] and then [
Limit
]. Set the FiO
2
low limit to 50%.
4. Make sure that a low FiO
2
alarm occurs.
5. Set the FiO
2
low limit to a value less than the measured FiO
2
value and make sure that
the alarm cancels.
6. Put the O
2
sensor back in the circuit.
7. Select [
Alarm
] and then [
Limit
]. Set the FiO
2
high limit to 50%.
8. Connect the manual bag to the manual bag port. Push the O
2
flush button to fill the
manual bag. After two to three minutes, make sure that the sensor measures
approximately 100% O
2.
9. Make sure that a high FiO
2
alarm occurs.
10. Set the FiO
2
high limit to 100% and make sure that the alarm cancels.
4.12.3 Test the Low Minute Volume (MV) Alarm
1. Make sure that MV alarm is turned on.
2. Select
[
Alarm
] and then [
Limit
]. Set the MV low limit to 8.0 L/min.
3. Make sure that a low MV alarm occurs.
4. Select
[
Alarm
] and then [
Limit
]. Set the MV low alarm limit to the default.
4.12.4 Test the Apnea Alarm
1. Connect the manual bag to the manual bag port.
2. Set the Bag/vent switch to the position.
3. Turn the APL valve control to set the APL valve to the minimum position.
4. Inflate the manual bag to make sure that a complete breathing cycle occurs.
5. Stop inflating the manual bag and wait for at least 20 seconds to make sure that the
apnea alarm occurs.
6. Inflate the manual bag to make sure that the alarm cancels.
4.12.5 Test the Sustained Airway Pressure Alarm
1. Connect the manual bag to the manual bag port.
2. Turn the O
2
flow control to set the O
2
flow to minimum.
3. Turn the APL valve control to set the APL valve to 30 cmH
2
O position.
4. Set the Bag/vent switch to the position.
5. Push the O
2
flush button for approximately 15 seconds. Make sure that the sustained
airway pressure alarm occurs.
6. Open the patient connection and make sure that the alarm cancels.